JPS6260090B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a regulator whose main body is prevented from rotating due to impact force when a motor starts rotating.

In conventional centrifugal separation type juicers, the direction of rotation of the motor rotor and the rotation direction of the spinner were the same. Therefore, when looking at the time of starting the motor, there are the following problems.

That is, in FIG. 1, the moment of inertia of the rotor 2 of the motor 1: I _a , and the angular velocity at startup: ω _a
Also, the moment of inertia of the spinner 3: I _b ,
Assuming angular velocity: ω _b , the angular momentum due to these rotating objects is L _a = I _a ×ω _a and L _b = I _b ×ω _b, respectively.
becomes. However, since the rotation directions of the rotor 2 and the spinner 3 are the same, the combined angular momentum becomes L=I _a ω _a +I _b ω _b . On the other hand, in the case of the rotational motion as described above, the law of conservation of angular momentum holds, so that the angular momentum of [-L] is transmitted to the main body 4. That is, -L= _-Icωc ( _Ic : moment of inertia of the entire body, _ωc : angular velocity of movement of the body), and the body 4 moves at an angular velocity _{of ωc} .

It is dangerous if the main body 4 moves due to the above-mentioned reasons when the motor 1 is started, and countermeasures against this problem include increasing the weight of the main body (increasing the moment of inertia of the main body and reducing the angular velocity ω _c ), and Typically, methods such as phase control are used to reduce the startup speed, but in either case, the cost is high.

The present invention solves the above problems, and includes the following:
One embodiment thereof will be described in detail based on the accompanying drawings.

In FIG. 2, 5 is the main body of the juicer having legs 7 on the bottom plate 6, 8 is the motor attached to the main body 5 via a buffer 9, 8' is the rotor of the motor 8, and 10 is mounted on the main body 5. This is a youth receptacle having a youth receptacle 11 inside and a youth outlet 12 at the bottom, and a freely rotatable spinner 13 whose diameter increases slightly upward is disposed inside the youth receptacle 10. I'm being forced to do it. 14 is a cutter fixed to the lower surface of the spinner 13, 15 is a filter detachably installed in the spinner 13, and the fruits crushed by the high speed rotation of the cutter 14 are
This filter 15 separates the lees from the lees, and the lees is stored inside the filter 15, that is, inside the spinner 13. At the same time, the lees is discharged from the upper part of the inner wall of the spinner 13 into the lees receiver 11, and outside from the lees outlet 12. Drip into.

16 is a balance weight that reduces rotational vibration of the spinner 13. Reference numeral 17 denotes a charging cylinder integrally formed with the juice receiving container lid 18, and has the role of guiding fruits and the like that are pushed into the cutter 14 by the pushing rod 19.

20 is a reversing mechanism connected to the motor shaft 21, and the aforementioned spinner 13 is detachably attached to the output shaft 22, and has a function of reversing the rotation direction of the motor shaft 21 and the rotation direction of the spinner 13. have.

23 is fixed to the motor shaft 21, and
A fin 23a is formed at the end of the inertia weight 23, which also has the function and effect of a motor cooling fan.

FIG. 3 shows details of the reversing mechanism. The rotational motion of the motor shaft 21 is transmitted to a second pulley 26 via a first pulley 24 and a V-belt 25 fixed to the motor shaft 21.

A first gear 27 rotates together with the second pulley 26, and a second gear 28 that meshes with this gear 27 is integrated with the output shaft 22. 2
9 and 30 are bearing members, 31 is a fixed shaft, and 32 is a cover.

In this mechanism, the rotational direction of the motor shaft 21 is transmitted in the same direction to the first pulley 24, V-belt 25, second pulley 26 and first gear 27, but at the stage of the second gear 28. Therefore, the rotation direction of the output shaft 22 becomes opposite to the rotation direction of the motor shaft 21 (see the plan view in Fig. 3a). One thing is that the rotation directions of the rotor 8' of the motor 8 and the spinner 13 attached to the output shaft 22 are reversed. When the motor 8 is started, the vector directions of the angular momentum of the rotor 8' of the motor 8 and the angular momentum of the spinner 13 are reversed and cancel each other out, and according to the law of conservation of angular momentum, the main body 5 The angular momentum transmitted to is very small, and therefore the rotational movement of main body 5 is small.

Note that when comparing the moment of inertia of the rotor 8' of the motor 8 and the moment of inertia of the spinner 13, the moment of inertia of the spinner 13 is generally large, partly because the outer diameter of the spinner 13 is large. Therefore, in order to increase the moment of inertia on the rotor 8' side, an inertia weight 23 is fixed to the motor shaft 21, so that the overall angular momentum of the rotor 8' and the angular momentum of the spinner 13 can be designed to be almost the same. is possible, in which case the angular momentum transmitted to the body 5 will be zero, so that the body 5 will not move at all.

In addition, as shown in FIG. 3, the reversing mechanism 20 can also have a speed reduction mechanism depending on the ratio of the diameters of the first pulley 24 and the second pulley 26.

As described above, the juicer of the present invention includes a body containing a built-in motor in which an inertia weight that also serves as a motor cooling fan is attached to the motor shaft, a juice receiving container placed on the body, and a juice receiving container that is rotated by the rotational movement of the motor. The rotation direction of the motor is opposite to the rotation direction of the spinner, and by attaching an inertia weight that also serves as a motor cooling fan to the motor shaft, the spinner has a moment of inertia larger than that of the motor. The moment of inertia of the motor can be balanced with the moment of inertia of the motor, and as a result, the angular momentum of the motor and the angular momentum of the spinner can be made almost the same. By turning it in the opposite direction, the angular momentum transmitted to the main body during use becomes zero, so the main body does not move during use, making it possible to provide an extremely easy-to-use regulator, and the inertial weight also serves as a motor cooling fan. Therefore, the cooling effect of the motor can also be improved.

[Brief explanation of the drawing]

FIG. 1 is a schematic vertical cross-sectional view of a general lever, FIG. 2 is a vertical cross-sectional view of a lever according to an embodiment of the present invention, and FIG.
Figures a and b are a plan view and a front cross-sectional view showing details of the speed reduction mechanism of the same pump. 5... Main body, 8... Motor, 10... Youth receiving container, 13... Spinner, 20... Speed reduction mechanism.

Claims (1)

[Claims] 1 A main body containing a motor in which an inertia weight that also serves as a motor cooling fan is attached to the motor shaft, a juice receiving container placed on the main body, and a spinner rotated by the rotational movement of the motor, The spinner is characterized in that the direction of rotation of the spinner and the direction of rotation of the spinner are opposite to each other.